91
Match
List-I (Enzymes) with
List-II (Reactions) and select the correct answer:
List-I List-II
a. Oxidoreductases
1. Synthesis by condensation of two groups requiring ATP
b. Lyases
2. Oxidation-reduction reaction
c. Transferases
3. Addition or loss of groups to double bonds
d. Ligases
4. Group transfer reactions
A)
a-2, b-1, c-3, d-4
B)
a-2, b-3, c-4, d-1
C)
a-2, b-4, c-1, d-3
D)
a-2, b-1, c-4, d-3
Answer & Solution
Answer: Option
B
92
Temperature required for vernalisation is
A)
5 - 10° C
B)
5 - 15° C
C)
0 - 5° C
D)
3 - 17° C
Answer & Solution
Answer: Option
C
93
In plants water is absorbed by the root hairs by a process called
A)
transportation
B)
respiration
C)
perspiration
D)
osmosis
Answer & Solution
Answer: Option
D
94
The stage of plasmolysis at which the first sign of shrinkage of cell contents from cell wall becomes detectable is called
A)
Deplasmolysis
B)
Evident plasmolysis
C)
Incipient plasmolysis
D)
None of the above
Answer & Solution
Answer: Option
C
95
The process of development of asexual embryos directly from egg, antipodal cell, nucellus or integument is called
A)
Anisogamy
B)
Agamospermy
C)
Parthenocarpy
D)
Apomixis
Answer & Solution
Answer: Option
B
96
Match
List-I with
List-II and select the correct answer:
List-I List-II
a. Aristotle and Theophrastus
1. Identified the pure air as oxygen and noxious air produced by the burning of candle as carbon dioxide
b. Lavoisier
2. Performed experiments and demonstrated that the main function of chloroplast is to photo-oxidize water
c. Robert Hill
3. Demonstrated that some bacteria use H2 S instead of H2 O in the process of photosynthesis
d. Van Niel
4. Believed that plants absorb all their nourishment inorganic and organic directly from the soil
A)
a-2, b-3, c-1, d-4
B)
a-1, b-2, c-3, d-4
C)
a-4, b-1, c-2, d-3
D)
a-4, b-2, c-1, d-3
Answer & Solution
Answer: Option
C
97
The symptoms of calcium deficiency in plants include:
A)
Meristematic regions are greatly affected and eventually die, thus terminating growth in the organs
B)
Chlorosis occurs along the margins of younger leaves, these areas usually become necrotic
C)
The chloroplasts lose chlorophyll and starch grains, become yellow green in colour, vacuolated, and granular, and finally disintegrate
D)
Both A and B
Answer & Solution
Answer: Option
D
98
Some of the physiological processes influenced by ethylene include
A)
Flower and fruit initiation
B)
Fruit growth and ripening
C)
Bud dormancy
D)
All of the above
Answer & Solution
Answer: Option
D
99
Which one of the following is active transport?
A)
It is the movement of a substance against a diffusion gradient with the use of energy from respiration
B)
It is the movement of a substance against a diffusion gradient without the use of energy
C)
It is the movement of a substance against a diffusion gradient with the use of energy from photosynthesis
D)
It is the movement of a substance along a diffusion gradient with the use of energy from respiration
Answer & Solution
Answer: Option
A
100
The response of buds to photoperiodism is actually controlled by
A)
The temperature of the day
B)
The length of the dark period
C)
The length of the light period
D)
The humidity of the light period
Answer & Solution
Answer: Option
B
